NIB-SEAL on sweat ball valves are shipped unassembled.

焊接球，NIB-SEAL装运时处于未组装状态。

This kind of wagon has the characteristics of less tare weight, heavy capacity, high speed, more functions and easy to assemble and unassembled.

该型具有自重轻、载重大、速度、多、便于装卸的特点。